diff options
| author | Ville Syrjälä <ville.syrjala@linux.intel.com> | 2014-08-27 17:33:12 +0300 |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2014-09-03 11:04:59 +0200 |
| commit | 00e1e623e62cd8452e28633182b91ddcbb70cc7c (patch) | |
| tree | 0c34d696170a4cee7ad138eb008080bf7c6a3016 /drivers/gpu/drm/i915/intel_ringbuffer.c | |
| parent | 21386f86c9af92fea4897e90c1671b3f0010e936 (diff) | |
drm/i915: Init some CHV workarounds via LRIs in ring->init_context()
Follow the BDW example and apply the workarounds touching registers
which are saved in the context image through LRIs in the new
ring->init_context() hook.
This makes Mesa much happier and eg. glxgears doesn't hang after
the first frame.
Cc: Arun Siluvery <arun.siluvery@linux.intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
[danvet: Add missing wa table initialization to avoid a functional
conflict with Arun's wa table debugfs support.]
Reviewed-by: "Barbalho, Rafael" <rafael.barbalho@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Diffstat (limited to 'drivers/gpu/drm/i915/intel_ringbuffer.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_ringbuffer.c | 46 |
1 files changed, 44 insertions, 2 deletions
diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.c b/drivers/gpu/drm/i915/intel_ringbuffer.c index 14b517d61b4..12135ef3606 100644 --- a/drivers/gpu/drm/i915/intel_ringbuffer.c +++ b/drivers/gpu/drm/i915/intel_ringbuffer.c @@ -681,7 +681,7 @@ static inline void intel_ring_emit_wa(struct intel_engine_cs *ring, return; } -static int gen8_init_workarounds(struct intel_engine_cs *ring) +static int bdw_init_workarounds(struct intel_engine_cs *ring) { int ret; struct drm_device *dev = ring->dev; @@ -758,6 +758,45 @@ static int gen8_init_workarounds(struct intel_engine_cs *ring) return 0; } +static int chv_init_workarounds(struct intel_engine_cs *ring) +{ + int ret; + struct drm_device *dev = ring->dev; + struct drm_i915_private *dev_priv = dev->dev_private; + + /* + * workarounds applied in this fn are part of register state context, + * they need to be re-initialized followed by gpu reset, suspend/resume, + * module reload. + */ + dev_priv->num_wa_regs = 0; + memset(dev_priv->intel_wa_regs, 0, sizeof(dev_priv->intel_wa_regs)); + + ret = intel_ring_begin(ring, 12); + if (ret) + return ret; + + /* WaDisablePartialInstShootdown:chv */ + intel_ring_emit_wa(ring, GEN8_ROW_CHICKEN, + _MASKED_BIT_ENABLE(PARTIAL_INSTRUCTION_SHOOTDOWN_DISABLE)); + + /* WaDisableThreadStallDopClockGating:chv */ + intel_ring_emit_wa(ring, GEN8_ROW_CHICKEN, + _MASKED_BIT_ENABLE(STALL_DOP_GATING_DISABLE)); + + /* WaDisableDopClockGating:chv (pre-production hw) */ + intel_ring_emit_wa(ring, GEN7_ROW_CHICKEN2, + _MASKED_BIT_ENABLE(DOP_CLOCK_GATING_DISABLE)); + + /* WaDisableSamplerPowerBypass:chv (pre-production hw) */ + intel_ring_emit_wa(ring, HALF_SLICE_CHICKEN3, + _MASKED_BIT_ENABLE(GEN8_SAMPLER_POWER_BYPASS_DIS)); + + intel_ring_advance(ring); + + return 0; +} + static int init_render_ring(struct intel_engine_cs *ring) { struct drm_device *dev = ring->dev; @@ -2244,7 +2283,10 @@ int intel_init_render_ring_buffer(struct drm_device *dev) dev_priv->semaphore_obj = obj; } } - ring->init_context = gen8_init_workarounds; + if (IS_CHERRYVIEW(dev)) + ring->init_context = chv_init_workarounds; + else + ring->init_context = bdw_init_workarounds; ring->add_request = gen6_add_request; ring->flush = gen8_render_ring_flush; ring->irq_get = gen8_ring_get_irq; |